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In a reference frame a man A is moving with velocity `(3hati-4hatj)ms^(-1)` and another man B is moving with velocity `(hati+hatj)ms^(-1)` relative to

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In a reference frame a man A is moving with velocity `(3hati-4hatj)ms^(-1)` and another man B is moving with velocity `(hati+hatj)ms^(-1)` relative to A. Find the actual velocity of B.
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`vecv_("actual")=vecv_(ref)+vecv_(ref)=[(hati+hatj)+(3hati-4hatj)]ms^(-1)=(4hati-3hatj)ms^(-1)`
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